--- title: "Meaning & Key Takeaway of: This minimum, the so-called critical…" description: "\"“This minimum, the so-called critical mass, turned out to be a surprisingly small 4 kg, about the size of an apple.”\" — John Emsley" image: "https://sms4smile.com/quotes/i/002/john-emsley-249156_quote_this-minimum-the-so-called-critical-mass_1160238.jpg" --- # This minimum, the so-called critical mass, turned out to… ![“This minimum, the so-called critical mass, turned out to be a surprisingly small 4 kg, about the size of an apple.” quote by John Emsley](https://sms4smile.com/quotes/i/002/john-emsley-249156_quote_this-minimum-the-so-called-critical-mass_1160238.jpg) [Download](https://sms4smile.com/quotes/i/002/john-emsley-249156_quote_this-minimum-the-so-called-critical-mass_1160238.jpg) [Open image](https://sms4smile.com/quotes/i/002/john-emsley-249156_quote_this-minimum-the-so-called-critical-mass_1160238.jpg) > ““This minimum, the so-called critical mass, turned out to be a surprisingly small 4 kg, about the size of an apple.”” [John Emsley](https://sms4smile.com/quotes/author/john-emsley/) ## About This Quote This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation. Critical mass for a reaction can be surprisingly small, like a 4 kg apple. **In simple terms:** Small amounts can trigger big reactions. Key Takeaway Recognize minimal thresholds. Themes science critical mass threshold reaction scale Mood informative curious Type educational technical When to use this quote - lab experiments - industrial safety - educational demos Key Concepts chemistry fundamentals energy dynamics Questions to Reflect On - What factors determine critical mass? - How does scale affect safety? A Different Perspective Small scale may be hard to detect. ★ ★ ★ ★ ★ No ratings yet [Critical mass](https://sms4smile.com/quotes/about/critical-mass/) [Mass Turned](https://sms4smile.com/quotes/about/mass-turned-3318001/) [Minimum](https://sms4smile.com/quotes/about/minimum/) [Small Kg](https://sms4smile.com/quotes/about/small-kg-3317999/) [Surprisingly Small](https://sms4smile.com/quotes/about/surprisingly-small-3318000/) ## Related quotes > [“And as always, it is surprisingly small, as the voice of the conscience is said to be.”](https://sms4smile.com/quotes/andrea-lee/and-as-always-it-is-surprisingly-small-as-the-voice-of-the-conscience/) [Andrea Lee](https://sms4smile.com/quotes/author/andrea-lee/) > [What usually happens is that when I'm nearing the end of one novel a vague idea about what I want to do next begins…](https://sms4smile.com/quotes/anna-quindlen/what-usually-happens-is-that-when-i-m-nearing-the-end-of-one-novel-a/) [Anna Quindlen](https://sms4smile.com/quotes/author/anna-quindlen/) > [We never know how our small activities will affect others through the invisible fabric of our connectedness. 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